Screen frame



FIG. 1 is a perspective view of a screen frame showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line disclosure is for illustrative purposes only and formsno part of the claimed design.

The ornamental design for a screen frame, as shown and described.